The only "sink" that wouldn't go too badly for me was if BT got a huge beastie spawner in the middle of it, and all continents were merged into one game world with sea zones allowing travel between them, so that the rogue spawns would increase the character per owned region density by making regions go rogue, but coordinated efforts to reclaim targeted lands would always have a chance of success and no land or realm would be guaranteed to be wiped permanently. Perhaps, as an option, portal stones could be made to allow people to "move" the rogue spawner into other regions and other continents, or a series of scrolls (should be nobles that do it, imo) (ex: using more summon scrolls at once in the same region than was ever used before), so that the realms next to the arbitrary first spawn place aren't totally doomed, and that the burden of the rogues can be moved around a bit by player actions, thus keeping this mostly a PvP mechanic.
